Cynon Valley is a former coal mining valley in Wales. It lies between Rhondda and the Merthyr Valley and takes its name from the River Cynon. Aberdare is located in the north of the valley and Mountain Ash in the south. From 1974 to 1996, Cynon Valley was a local government district.

Rhigos is a small village on the saddle of higher ground between the Vale of Neath and the Cynon Valley. It was part of the old Neath Rural district Council under Glamorgan until 1974. The village then came under the jurisdiction of The Cynon Valley Borough which subsequently became Rhondda Cynon Taf, South Wales in 1996. It lies just off the old Aberdare road that was the main link between Aberdare and Glynneath, before the A465 road was extended in the 1960s. The hamlets of Cefn Rhigos and Cwm-Hwnt lie to the west of the main village.